MS.90031 Cable-Metric, Terminology and Design Guidelines, Test Methods and Dimensions, Requirements

In the automotive maintenance world, selecting the right engine coolant is crucial to ensuring the longevity and performance of a vehicle's cooling system. In this respect, the MS.90031 material standard has emerged as an important specification for vehicle owners. This specific standard defines the requirements for organic additive technology coolants designed especially for modern engines with aluminum components. This Stellantis-compliant standard primarily consists of the following sub-sections:

• The “MS.90031/01 Cable-metric - Terminology and design guidelines” standard defines terminology for wiring used in general-purpose road vehicles, for use in MS.90031 documentation for electrical systems in vehicles developed by the Stellantis Group. Regardless of the configuration, all requirements of the MS.90031 standard are fully met:
• Color variety of conductors
• Presence of strips in insulation
• Presence of rings in insulation

All regions are covered by this specification.

The MS.90031 standard covers the physical dimensions, characteristics, and mechanical properties of cables used in general-purpose applications for road vehicles. An electrical conductor is a component of an electrical distribution system. This standard is mostly general in nature and details all the information required for the definition of cables.

The first-tier supplier is responsible for fulfilling these requirements, including any provisions it deems useful to ensure, based on its knowledge and experience, that its product is capable of performing the functions assigned to it for the project.

Application restrictions relating to second-tier suppliers and requirements concerning compatibility testing of cable harness fasteners (such as adhesive tape, gaskets, moldings, and grommets) are specifically subject to this statement.

This standard is limited to designs requiring the use of ISO cable sizing. Cables supplied must only be from sources, sizes, and compounds explicitly listed in the engineering approved source list. Suppliers must contact Stellantis for new approvals.

• The standard “MS.90031/02 Cable-metric - Test methods” describes test methods for electrical cables used in general-purpose road vehicles. This standard is based on and refers to “ISO 19642-2 Road vehicles - Automotive cables - Test methods”. New tests have also been added to this standard to ensure a high level of quality beyond the minimum requirements of the international standard.

This standard covers test methods for electrical cables designed for use in applications where the nominal system voltage is a maximum of 1500V DC or 1000V AC. All regions are covered by this standard.

• Tests for single-core and sheathed cables.
• Dimensional tests
• Cable outer diameter
• Insulation thickness
• Conductor diameter
• Cross-sectional area
• Cable outer diameter during the process
• Concentricity
• Electrical tests
• Conductor resistance
• Determination of temperature coefficients
• Withstand voltage
• Withstand voltage after environmental tests.
• Insulation faults
• Insulation volume resistivity
• Value reduction curve
• Overload curve
• Mechanical tests
• Strip force
• Abrasion test
• Heated scraping abrasion
• Breaking strength of the finished cable
• Circular bending
• Flexibility test
• Wire loosening
• Tensile strength and elongation of insulation.
• Column strength
• Notch test
• Environmental tests
• Sample preparation and wrapping tests.
• Long-term thermal aging, 3000 hours at temperature class grade.
• Short-term thermal aging, temperature class grade 25 degrees for 240 hours.
• Thermal overload, temperature class rating 50 degrees for 6 hours.
• High temperature pressure test
• Shrinkage caused by heat.
• Low temperature wrapping
• Cold Strike
• Temperature and humidity cycling
• Hot water resistance
• Resistance to liquid chemicals (liquid compatibility)
• Durability of cable marking
• Tensile crack resistance
• Ozone resistant
• Artificial wear
• Flame spread resistance
• Density
• Volume heat capacity
• Chemical compatibility of components
• Creep of insulation
• Leakage test (anti-capillarity wires only)
• Additional tests for sheathed cables only.
• Size tests
• The oval shape of the case
• The thickness of the case
• Measurement of the mesh (and foil if necessary) (measurement of the mesh's outer diameter, measurement of the mesh's cross-sectional area)
• Electrical tests
• Electrical continuity
• The strength of the material was determined in the last inspection.
• Shielding efficiency (screen DC resistance, surface transfer impedance, shielding attenuation - Three-axis method, sheath failure in shielded cables)
• Mechanical tests
• The sheath's strip strength
• The tensile strength and elongation of the case.
• Environmental tests
• Heat shrinkage of the case
• Durability of case marking
• The standard “MS.90031/03 Cable-metric - Dimensions and requirements - 30V AC or 60V DC single-core copper conductor” specifies the dimensions and requirements for single-core cables designed for general-purpose vehicle applications where the nominal system voltage is a maximum of 30V AC or a maximum of 60V DC. This standard specifies the requirements for copper conductor cables. All regions are covered by this standard.
• The standard “MS.90031/04 Cable-metric - Dimensions and requirements - 30V AC or 60V DC single-core aluminum conductor” specifies the dimensions and requirements for single-core cables designed for general-purpose vehicle applications where the nominal system voltage is a maximum of 30V AC or a maximum of 60V DC. This standard specifies the requirements for cables with aluminum conductors. All regions are covered by this standard.
• The standard “MS.90031/05 Cable-metric - Dimensions and requirements - 600V AC or 900V DC and 1000V AC or 1500V DC single-core copper conductor cables” describes the dimensions and requirements for single-core cables designed for general-purpose vehicle applications where the nominal system voltage is a maximum of 600 V AC or a maximum of 900V DC or 1000V AC or 1500 V DC. This standard specifies the requirements for copper conductor cables. All regions are covered by this standard.
• The standard “MS.90031/06 Cable-metric - Dimensions and requirements - 600V AC or 900V DC and 1000V AC or 1500V DC single-core aluminum conductor cables” describes the dimensions and requirements for single-core cables designed for general-purpose vehicle applications where the nominal system voltage is 600V AC or 900V DC and 1000V AC or 1500V DC. This standard specifies the requirements for aluminum conductor cables. All regions are covered by this standard.
• The standard “MS.90031/07 Cable-metric - B Dimensions and requirements - 30V AC or 60V DC sheathed, shielded or unshielded, multi-core or single-core copper conductor cables” describes the dimensions and requirements for sheathed, shielded or unshielded, multi-core or single-core copper conductor cables designed for use in road vehicle applications where the nominal system voltage is a maximum of 30V AC or 60V DC. This standard covers all regions.
• The standard “MS.90031/08 Cable-metric - Dimensions and requirements - 30V AC or 60V DC sheathed, shielded or unshielded, multi-core or single-core aluminum conductor cables” describes the dimensions and requirements for sheathed, shielded or unshielded, multi-core or single-core aluminum conductor cables designed for use in road vehicle applications where the nominal system voltage is a maximum of 30V AC or 60V DC. This standard covers all regions.
• The standard “MS.90031/09 Cable-metric - Dimensions and requirements - Sheathed, shielded or unshielded, multi-core or single-core copper conductor cables for 600V/1000V AC or 900V/1500V DC” describes the dimensions and requirements for sheathed, shielded or unshielded, multi-core or single-core copper conductor cables designed for use in road vehicle applications where the nominal system voltage is a maximum of 600V/1000V AC and 900V/1500V DC. This standard covers all regions.
• The standard “MS.90031/10 Cable-metric - Dimensions and requirements - 600V/1000V AC or 900V/1500V DC sheathed, shielded or unshielded, multi-core or single-core aluminum conductor” specifies the dimensions and requirements for sheathed, shielded or unshielded, multi-core or single-core aluminum conductor cables designed for use in road vehicle applications where the nominal system voltage is 600V/1000V AC or 900V/1500V DC. This standard covers all regions.

For many years, our organization, with its competent and experienced staff, has been understanding the needs of its customers, providing the advanced testing services they require, and assisting in the establishment, implementation, and improvement of management systems. Within this framework, we also provide testing services to businesses in accordance with the "MS.90031 Cable-metric, terminology and design guidelines, test methods and dimensions, requirements" standard.